Used to Zyex 3/4M for years, I wanted to try the Helicore Hybrid 3/4M... Ouch! Fatal mistake! Why is it not indicated anywhere that these strings are much harder to play than the Zyex of the same gauge? Yet they are two sets from the same brand, and the two have nothing to do with each other! I received them yesterday... and today I am crying because my fingers (hands and forearms) hurt so much! Thanks D'Addario!

mounted strings good quality